Altai Mountains, Russian Altay, Mongolian Altayn Nuruu, Chinese (Pinyin) Altai Shan,
complex mountain system of Central Asia extending approximately 1,200 miles (2,000 km) in a southeast-northwest direction from the Gobi (Desert) to the West Siberian Plain, through China, Mongolia, Russia, and Kazakhstan. The jagged mountain ridges derive their name from the Turkic-Mongolian altan, meaning “golden.”

The system has three main subdivisions: the Altai proper (formerly called the Soviet Altai) and the Mongolian and Gobi Altai. A peak in the Altai proper, Belukha—at an elevation of 14,783 feet (4,506 metres)—is the range’s highest point. In the past ... (100 of 1,816 words)